Question

Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4.
can someone help me with this pre test question

Answer 1

a - f(x) = −16x2
b - f(x) = 16x2
c - f(x) = −one sixteenth x2
d - f(x) = one sixteenthx2

Answer 2

i would start by drawing a picture, u can make a rough graph using the information given

Answer 3

how do i do that on here

Answer 4

i will give medal to whoever gives me right answer

Answer 5

My answer was c btw

Answer 6

its c

Answer 7

thanks ! im glad i was right

Answer 8

step 1: H=0, K+P = -4
step 2: y=k−p=-4
step 3: k+p = -4, k-p = 4